Combined multiple fuse-block and switch.



. P. E. WESTERDAHL comamzn MULTIPLE rusn BLOCK AND SWITCH.

APPLICATION FILED D30. 1, 1910.

- Patented June 6, 1911.

2 SHEETS-SHEET L.

gxm m PEWisZkniafiL .3 m =2 I, 541 I I m album P. E. WESTERDAHL.COMBINED MULTIPLE FUSE "BLOCK AND SWITGH.

ABPLIOATION 11mm no. 1, 1910.

Patented June 6, 1911.

2 SHEETS-SHEET 2.

flmmm UNITED STATES PATENT OFFICE.

PER ENOGK WESTERDAJFIL, 0F SEATTLE, WASHINGTON.

COMBINED MULTIPLE FUSE-BLOCK ANDSWITCH.

To all whom it may concern:

Be it known that I, PER ENOCK WESTER- DAHL, a citizen of the UnitedStates, residing at Seattle, in the county of King and State ofWashington, have invented certain new and useful Improvements inCombined Multiple Fuse-Blocks and Switches; and I do declare thefollowin to be a' full, clear, .and exact description of the invention,such as will enable others skilled in he art to which it appertains tomake an use the same.

This invention relates to improvements in a combined rotary multiplefuse box and switch.

One object of the invention is to provide a combined fuse block andswitch of this character having an improved construction andarrangementof fuse supporting mechanism by means of which the fuses are firmly heldin position and may be successively brought into engagement with springcontact terminals, thus providing for the quick and easy renewing of thefuses when any of the same have burned out.

Another object is to provide means for holding the fuses against casualengagement with the contact terminals when the switch is open.

A further object is to provide a combined switch and fuse block of thischaracter which will be simple, stron and durable in construction,eflicient an reliable in operation and welladapted to the purposefor-which it is designed.

Withthe foregoing and other objects in view, the invention consists ofcertain novel features of construction, combination and arrangement ofparts as will be more fully described and particularly pointed out inthe appended claims.

In the accompanying drawings: Figure 1 is aside view of my improved.fuse block and switch showing the same in closed position; Fig. 2 is aside view with the parts broken away showing the switch in openposition; Fig. 3 is an end view thereof; Fig. 4c is a centrallongitudinal sectional view; Fig. '5 isa vertical cross-sectional viewon the line 5-5 of Fig. 1; Fig. 6 is a detail perspective view of thelocking washer for holding the switch in an open position; and,

Fig. 7 is a similar view of the spring locking pawl for holding theswitch 1n open positlon.

Referring more particularly to the draw- Specification of LettersPatent.

Patented June 6 1911'.

' Application filed December 1, 1910. Serial No. 595,090.

ings, 1 denotes the base or supporting plate of the switch, said plate.being formed of porcelain, slate or any'other non-conducting material.Secured to the plate 1 are pairs of spring contact terminals 2 which arein the form of spring metal plates or strips bent upon themselves'intosubstantially U.- shape or form and having their upper ends extendedinwardly and bent or curved outwardly to form concaved contact heads 3which are adapted to be engaged by the ends of the fuses as will behereinafter more fully described. The contact terminals 2 r are providedat their looped outer ends with terminal or binding screws 4 with whichare connected the terminals of the conducting.

wires for the circuits. In the looped lower ends of the contactterminals are also arranged fastening screws or bolts 5 which areinserted through the base 1 and securely hold the spring contactterminals in position.

On the base 1 between the pairs of contactterminals 2 are securedupwardly projecting bearin standards 6 in the upper ends of which 1srevolubly mounted the supporting and operating shaft 7 of the switcFixedlymounted on the shaft 7 between the upper ends of the standards 6.isa fuse supporting block 8 which may be of any suitable shape but ispreferably cyllndrlcal. On the opposite endsof the block areformedsquared extensions 9 with which are engaged washers 10 and 11. Theblock 8 and washers 11 are formed of any suitable insulating ornon-conducting material.

In the opposite ends of the block 8 are secured pairs of spring fuseholding clips 12, said clips being at equal'intervals around the blockand havmg their outer ends pro ect1ng radially therefrom as shown. Theclips 12 are preferably formed from a single str1p of spring metal bentmidway between its ends to form a loop shaped block engagmg shank 13'and outwardly curved fuse engaglng fingers the terminals or outer endsof which are bent outwardly at a slight angle, as shown at 14, tofacilitate the engagementlof the fuses with the fingers. The loop shapedshanks,

clips holding the fuse blocks. Secured to the base 1 adjacent thenotched end of the washer 10 is an upwardly projecting spring lockingpawl 16 the upper end of which is bent inwardly to form a tooth 17 whichis adapted to spring into engagement with the the fuses are disengagedfrom the terminals,

said blocks being thus held against turning and the fuses from beingcasually engaged with the terminals thus holding the switch in openposition.

One end of the shaft 7 is extended a suitable distance andhas arrangedthereon any suitable form of switch operatin knob or handle 18. Thefiises 9 may be 0 any suitable construction and adapted to be sup portedby the clips and to be engaged with the spring contact terminals ashereinbefore described.

From the foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood Without requiring a more extended explanation.Various changes in the form, proportion and the minor details ofconstruct' 11 may be resorted to without departing rom the principle orsacrificing any of the advantages of the invention as defined in theappended claims.

Having thus described my invention, what I claim is: p 1. In a combinedswitch and fuse block of the character described, a base, contactterminals arranged on said has a revolubly mounted fuse supporting bkok, means on said block to hold a series o fuses whereby the latter aresuccessively brought into and out of engagement with said nals and theswitch thus opened and closed and, means to lock said switch inopenposition thereby holdin the fuses from being casually enga' edwitthe terminals.

2. In a com ined switch and fuse block of the character described, a.base, pairs of spring contact terminals secured to said base,

a revolubly mounted supporting shaft, a fuse supporting block secured tosaid shaft, fuse holding clips secured to said block whereby the fusescarried by said clips are .bent upon themselves to form 100 attachingshanks adapted to be driven mto contact termi-' adapted to besuccessively brought into and out of engagement with said spring contactterminals and the switch thus opened and closed, and a spring lockingpawl adapted to lock said block against movement when turned to aposition wherein the fuses are out of engagement with the terminalsthere by preventing the casual contact or engagement of the fuses withthe terminals.

3. In a combined fuse block and switch, a base plate, pairs of springcontact terminals arranged on said base plate, supporting standardssecured to said plate between said terminals, a shaft revolubly mountedin said standards, a fuse block fixedly mounted on said shaft, a seriesof fuse holding clips arranged on said block and adapted to detachablysecure a series of fuses thereto, washers arranged on the opposite endsof said block, one of said washers having formed therein an annularseries of locking notches, one of which is arranged o posite the centerof the space between said use holding clips, and a spring pawl securedto the base and adapted to be engaged with said locking notches wherebythe switch is locked in an 0 en position and the fuse held against casuaengagement with said contact terminals. L

4. In a combined fuse block and switch, a base plate, pairs of springcontact terminals secured to said base, a revolubly mounted fuse blockarranged between said terminals, fuse holding clips arranged on saidblock, said clips comprlsing strips of spring lineta s a e the oppositeends of the block and outwardly projecting curved fuse holding fingers,washers secured to Lthe opposite ends of said block, one of said washershaving formed in its outer end an annular series of locking notches, oneof which is arranged opposite the center of each of the spaces betweenthe fuse holding clips on the block, and a spring pawl secured tothe'base plate and having on' its upper end a tooth adapted to engagethe notches in said washer and to thereby lock said block againstturning when ,the switch is open and the fuse against casual engagementwith said contact terminals In testimony whereof I have hereunto set myhand in presence of two subscribing witnesses.

P. ENOCK WESTERDAHL. Witnesses:

F. W. PARRISH,

C. PAKRISHL-

